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Finding the Fourth Proportional to 117,558, 176,282.40 and 42,668.64

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Solution

The fourth proportional to 117,558, 176,282.40 and 42,668.64 is: 63,983.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,558 : 176,282.40 = 42,668.64 : x
  2. Step 2: Convert to fraction form
    117,558/176,282.40 = 42,668.64/x
  3. Step 3: Cross multiply
    117,558x = 176,282.40 × 42,668.64
  4. Step 4: Simplify right side
    117,558x = 7,521,730,263.94
  5. Step 5: Solve for x
    x = 7,521,730,263.94/117,558
  6. Step 6: Final answer
    x = 63,983.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.